Bionaire BWF75 Replacement wick filter is a Genuine Bionaire Filter for BCM3656, BCM3855, BCM3955 humidifiers.
Bionaire BWF75 wick filter is infused with "Arm & Hammer" baking soda to help absorb household odors.
The anti-microbial agent inhibits growth of mold, mildew and odor-causing bacteria.
Bionaire BWF75 wick filter absorbs minerals and calcium from the water and has to be replaced regularly to keep the performance of your humidifier at a sufficient level.
Filter's Lifetime: 1 to 3 months (depends on the quality of water).